Evidence map›Paper›PMID 21788476›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Engineering hepatocyte growth factor fragments with high stability and activity as Met receptor agonists and antagonists.

Douglas S Jones, Ping-Chuan Tsai, Jennifer R Cochran

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.9field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 55 citations in OpenAlex.

  1. Review
  2. Article
  3. New treatment methods for myocardial infarction.Frontiers in cardiovascular medicine · 2023
    Review
  4. HGF and MET: From Brain Development to Neurological Disorders.Frontiers in cell and developmental biology · 2021
    Review
  5. Article
  6. Cyclic Peptide-Based Biologics Regulating HGF-MET.International journal of molecular sciences · 2020
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Douglas S JonesDepartment of Bioengineering, Cancer Institute, Bio-X Program, Stanford University, Stanford, CA 94305, USA.
Ping-Chuan Tsai
Jennifer R Cochran
Stanford University · US

Funding

Leveraging innovative technologies in basic and clinical cancer researchT32CA009302 · NCI · STANFORD UNIVERSITY · PI LAURA D ATTARDI, Aaron M Newman · 1985 to 2026
$19.1M
Graduate Training Program in BiotechnologyT32GM008412 · NIGMS · STANFORD UNIVERSITY · PI COCHRAN, JENNIFER R · 1991 to 2020
$5.5M
Engineered HGF-NK1 antagonists for Met-targeted cancer imaging and therapyR01CA151706 · NCI · STANFORD UNIVERSITY · PI COCHRAN, JENNIFER R · 2010 to 2014
$1.6M
Engineering the Met receptor: a potent antagonist of tumor growth and metastasisR21CA131706 · NCI · STANFORD UNIVERSITY · PI COCHRAN, JENNIFER R · 2008 to 2009
$354k
NCI NIH HHS R01 CA151706NCI NIH HHS R21 CA131706NCI NIH HHS T32 CA009302NIGMS NIH HHS 5T32 GM008412-15S1NIGMS NIH HHS T32 GM008412
6 · The paper itself

Abstract

The Met receptor tyrosine kinase and its ligand hepatocyte growth factor (HGF) play an important role in mediating both tumor progression and tissue regeneration. The N-terminal and first Kringle domains (NK1) of HGF comprise a naturally occurring splice variant that retains the ability to activate the Met receptor. However, NK1 is a weak agonist and is relatively unstable, limiting its therapeutic potential. Here, we engineered NK1 mutants with improved biochemical and biophysical properties that function as Met receptor agonists or antagonists. We first engineered NK1 for increased stability and recombinant expression yield using directed evolution. The NK1 variants isolated from our library screens acted as weak Met receptor antagonists due to a mutation at the NK1 homodimerization interface. We introduced point mutations that restored this NK1 homodimerization interface to create an agonistic ligand, or that further disrupted this interface to create more effective antagonists. The rationally engineered antagonists exhibited melting temperatures up to approximately 64 °C, a 15 °C improvement over antagonists derived from wild-type NK1, and approximately 40-fold improvement in expression yield. Next, we created disulfide-linked NK1 homodimers through introduction of an N-terminal cysteine residue. These covalent dimers exhibited nearly an order of magnitude improved agonistic activity compared to wild-type NK1, approaching the activity of full-length HGF. Moreover, covalent NK1 dimers formed from agonistic or antagonistic monomeric subunits elicited similar activity, further signifying that NK1 dimerization mediates agonistic activity. These engineered NK1 proteins are promising candidates for therapeutic development and will be useful tools for further exploring determinants of Met receptor activation.

Indexed as

Amino Acid SequenceAnimalsCell LineDogsHepatocyte Growth FactorHumansMolecular Sequence DataMutant ProteinsPeptide FragmentsPeptide LibraryPoint MutationProtein BindingProtein EngineeringProtein MultimerizationProtein StabilityProto-Oncogene Proteins c-metHepatocyte Growth FactorMutant ProteinsPeptide FragmentsPeptide LibraryProto-Oncogene Proteins c-met

Identifiers

PMID21788476
PMCPMC3156163
OpenAlexW2149151801

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.